| Budget Amount *help |
¥1,700,000 (Direct Cost: ¥1,700,000)
Fiscal Year 1988: ¥400,000 (Direct Cost: ¥400,000)
Fiscal Year 1987: ¥1,300,000 (Direct Cost: ¥1,300,000)
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| Research Abstract |
At present EPF is detected with rosette inhibition test and many researchers yary in results. For cattle, a few reports are available and no measuring method has been established yet. Therefore, the present study made in order to examine various factors which influence rosette inhibition test of cattle. On the basis of the results obtained from rosette inhibition test, the effectiveness of EPF as early diagnosis of pregnancy in cattle was also examined.
The results of a rosette inhibition test performed according to the modified conditions, using pregnant sera of the 15th day after artificial insemination, revealed measured RIT values of 6.6 1.29 (9-4) on average, with a significance from those of control, non-pregnant sera of 2.0 0.94 (3-0). On the other hand, the measured RIT values of pregnant serum reflected well the results of a rectal examination performed later, and of 9 cases which were at pregnant area of a RIT value of more than 5,7 gave birth ot newborns.
The above results suggested both the usefulness of RIT values of pregnant serum of the 15th day after artificial insemination as an index of early pregnancy and the effectiveness of EPF in the diagnosis of bovine early pregnancy.
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